Make NTP other sessions menu off disabled by default.

chrome/browser/about_flags.cc

 // Copyright (c) 2012 The Chromium Authors. All rights reserved.
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
 #include "chrome/browser/about_flags.h"
 
 #include <algorithm>
 #include <iterator>
 #include <map>
 #include <set>
@@ skipping 564 matching lines @@
     SINGLE_VALUE_TYPE(switches::kEnableExtensionActivityUI)
   },
   {
     "webui-task-manager",
     IDS_FLAGS_WEBUI_TASK_MANAGER_NAME,
     IDS_FLAGS_WEBUI_TASK_MANAGER_DESCRIPTION,
     kOsAll,
     SINGLE_VALUE_TYPE(switches::kWebUITaskManager)
   },
   {
-    "disable-ntp-other-sessions-menu",
+    "enable-ntp-other-sessions-menu",
     IDS_FLAGS_NTP_OTHER_SESSIONS_MENU_NAME,
     IDS_FLAGS_NTP_OTHER_SESSIONS_MENU_DESCRIPTION,
     kOsAll,
-    SINGLE_VALUE_TYPE(switches::kDisableNTPOtherSessionsMenu)
+    SINGLE_VALUE_TYPE(switches::kEnableNTPOtherSessionsMenu)
   },
 #if defined(USE_AURA)
   {
     "enable-ash-uber-tray",
     IDS_FLAGS_ENABLE_ASH_UBER_TRAY_NAME,
     IDS_FLAGS_ENABLE_ASH_UBER_TRAY_DESCRIPTION,
     kOsAll,
     SINGLE_VALUE_TYPE(ash::switches::kAshUberTray),
   },
 #endif
@@ skipping 442 matching lines @@
 }
 
 const Experiment* GetExperiments(size_t* count) {
   *count = num_experiments;
   return experiments;
 }
 
 }  // namespace testing
 
 }  // namespace about_flags